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Prevalence of pain and function outcomes by income category
| Moderate to severe pain | Moderate to severe functional limitation | Overall knee status | ||
|---|---|---|---|---|
| Better | Much better | |||
| 2 years: | ||||
| ≤ US$35, 000 | 5.7% | 19.6% | 10.9% | 85.7% |
| > US$35, 000 to US$45, 000 | 6.7% | 22.9% | 8.8% | 87.5% |
| > US$45, 000 | 8.2% | 23.1% | 8.5% | 87.6% |
| 5 years: | ||||
| ≤ US$35, 000 | 7.2% | 28.0% | 9.4% | 85.6% |
| > US$35, 000 to US$45, 000 | 7.5% | 29.7% | 9.3% | 85.4% |
| > US$45, 000 | 8.2% | 29.6% | 9.7% | 84.4% |
